"""

"""
import sys
import pygame

def check_events(ship):
    #print("触发了方法")
    """响应按键和鼠标事件"""
    for event in pygame.event.get():
        #print("触发了事件")
        if event.type==pygame.QUIT:
            sys.exit()
        elif event.type==pygame.KEYDOWN:
            if event.key==pygame.K_RIGHT:
                #ship.rect.centerx+=5;
                ship.moving_right=True
            elif event.key==pygame.K_LEFT:
                ship.moving_left=True
        elif event.type==pygame.KEYUP:
            if event.key==pygame.K_RIGHT:
                ship.moving_right=False
            elif event.key==pygame.K_LEFT:
                ship.moving_left=False

def update_screen(ai_settings,screen,ship):
    """更新屏幕上的图片，并切换到新屏幕"""
    screen.fill(ai_settings.bg_color)
    ship.blitme()

    #让最近绘制的屏幕可见
    pygame.display.flip()